Number of nodes vs number of Cells
I have a few questions.
For tetrahedral mesh in the 3D domain, why the number of cells is higher than the number of nodes?
for example, in my case, For tetrahedral mesh, the ratio is about 5 elements/cells to each node. While, when I generated hexahedra mesh, the ratio is about 1.
Secondly, when we set the size of the element in sizing, why it has a unit of length? Does it refer to the boundary of the face (edge)?
I need detailed information about how the mesh is generated in a 3D case. I much appreciate if any link would also be provided.
Thanks in anticipation.